| article html file updated | 7 February 2020 22:40 CET | Update | https://www.mdpi.com/2073-4360/9/2/49 |
| article html file updated | 23 September 2019 03:53 CEST | Update | - |
| article html file updated | 4 May 2019 12:43 CEST | Update | - |
| article html file updated | 20 March 2019 06:34 CET | Update | - |
| article html file updated | 1 March 2017 11:13 CET | Update | - |
| article html file updated | 4 February 2017 10:21 CET | Original file | - |
| article xml uploaded. | 4 February 2017 10:20 CET | Update | https://www.mdpi.com/2073-4360/9/2/49/xml |
| article xml uploaded. | 4 February 2017 10:20 CET | Original file | - |
| article pdf uploaded. | 4 February 2017 10:20 CET | Version of Record | https://www.mdpi.com/2073-4360/9/2/49/pdf |
